Wrench.



Patented nec. 2, moz.

JNVENTOR Home] .1.` J. numLAN.

(Alpucation med nu. 22, 190:5.)

(uu- Model.)

ci D W l1,/

4 WJTNESSES y UNITED STA WRENCH.

SPECIFICATION forming part of Letters Patent No. 714,741, dated December 2, 1902A.

duplication filed March 22, 1902. Serial No. 99,441. (No model.)

T all whom it' may con/cern:

Be it known that I, JOHN J. QUINLAN,a citizen ofthe United States, residing at Boston, in

the county of Suolk and State of Massachu-V setts, have invented certain newand useful Improvements in Wrenches; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to Wrenches; and it consists in the novel construction and combination of the parts hereinafterfully described and claimed.

In the drawings, Figure l is a front view of the Wrench, partly in section. Fig 2 isa side `View of the wrench.

A is the handle of the wrench, which forms a portion of the shank B, which has a stationary jaw b at its end.

O is theslidable jaw, provided with sockets c, which slide over the shank B.

D is aserrated bar, whiehis pivoted to the jaw C by a pin d and which 4slides with the jaw O in a guideband E', secured to the handle.

E is a toothed rack on `the handle for engaging with the serratedbar D.

G is a chamber formed through the middle part of the handle A, and g is a block which is slidable in the chamber G.

H is a screw-threaded spindle, which is arranged in the chamber G and which engages with the block g. A wheel or disk h is secured on the spindle H and projects from the sides of the chamber, so that the screw can be revolved with the thumb and lingers. The ends of the spindle or screw bear against the ends of the chamber, so that the block is slid in the chamber when the screw` is revolved.

y I is a cover-plate, which is bent to the form of a loop. This cover-plate extends around the back of the bar D and is secured to the block gby screws or pins t'. The sides of the cover-plate are letinto recesses in the handie, so that they are flushA with it. A slot g is formed longitudinally in the looped portion of the cover-plate behind the bar D, and

j' is a screw which engages with the bar D and which slides in the slot g. This screw j forms a connection between the cover-plate and the bar D. Pins 7.: are also used to secure together the side portions of the coverplate beyond the chamber O, and 7c indicates lateral slots in the handle for the pins to pass through. When the screw is screwed up, the serrated bar is placed in engagement with the toothed rack, so that the slidahle jaw is locked lto the shank. When the screw is revolved, so as to push the block toward the toothed rack, the cover-plate moves the serrated bar out o f engagement with the toothed rack and permits the slidable jaw to be slid upon the shank to suit any nut, pipe, or other object which is to be gripped by the jaws.

What I claim isl.' In a wrench, the combination, with a shank having a chamber in its handle, .a stationary jaw at one end, and a toothed rack on one side; of a slidable jaw, a serrated bar pivoted to the slidable jaw, a block slidable in the said chamber, a screw for sliding the said block, and a looped cover-plate secured to the said block and operatively connected with the said bar, whereby the said bar is moved into and out of engagement with the toothed rack when the said screw is revolved, substantially as set forth.

2. Iny a wrench, the combination, with a shank having a chamber in its handle, a stationary jaw at one end, and a toothed rack on its side; of a slidable jaw, a serrated bar pivoted to the sldable jaw, a bl'ock slidable in the said chamber, a screw for sliding the said block,a looped cover-plate provided with a longitudinal slot in its looped portion, and a connection between the said cover--plate and bar` which slides in the said slot, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN J. QUINLAN.V 

